• Title/Summary/Keyword: Asteroidea

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A New Record of Sea Star Genus Nearchaster (Asteroidea: Notomyotida: Benthopectinidae) from East Sea, Korea

  • Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • v.31 no.2
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    • pp.135-138
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    • 2015
  • An asteroid specimen was collected in adjacent water of Gisamun, Gangwon-do in the East Sea, Korea at a depth of 170 m by fishing net at May 2013. It was identified as Nearchaster (Nearchaster) pedicellaris (Fisher, 1910) belonging to family Benthopectinidae of order Notomyotida, which was new to the Korean fauna. The genus, family, and order of this species were also new to Korean waters. The partial sequence of mitochodrial cytochrome c oxidase subunit 1 (CO1) was determined for the first time and registered at GenBank.

A Newly Recorded Sea Star of the Genus Lophaster (Asteroidea: Velatida) from Korea

  • Lee, Tack-Jun;Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.3
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    • pp.331-333
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    • 2009
  • A new asteroid specimen was collected at a depth of 400 m in the East Sea. It was identified as Lophaster furcilliger Fisher, 1905 belonging to the family Solasteridae of the order Velatida. This species is new to the Korean fauna. Thirty asteroid species including L. furcilliger have been reported in the East Sea of Korea so far.

Bycatch reduction plan of offshore dredge in the western sea, Korea (서해안 근해형망 어업의 혼획저감 방안)

  • Sug-Tai KIM;Hyun-Young KIM
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.59 no.4
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    • pp.290-300
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    • 2023
  • This study aimed to identify the actual catch situation of offshore dredge gear which is newly regulated in the legislation. It's also conducted to identify the species composition, weight of the catch including the target species and incidental catches, and to provide the basic information necessary for the resource management of aquatic organisms caught by offshore dredge. During the investigation period (from September 2022 to May 2023), a total of 61 species appeared in the test operation sea of Boryeong, Chungcheongnam-do and Gunsan, Jeollabuk-do, with 31 species of fishes, 11 species of malacostraca, six species of gastropoda, five species of bivalvia, three species of cephalopoda, three species of asteroidea, one species each of asteroidea and holothuroidea appeared. According to the results of the test operation conducted in September and November 2022, the non-catch season of Atrina (Servatrina) pectinata, 1,203 shellfishes were caught out of 2,979 caught in number, showing a bycatch rate of 59.6%, and by weight, 157.9 kg of shellfish was caught out of the total catch of 448.4 kg, showing a bycatch rate of 64.8%. On the other hand, in February and May 2023, the catch season for Atrina (Servatrina) pectinata, 3,692 fishsells were caught out of the 4,232 catches in total, showing a bycatch rate of 12.8%, and by weight, 1,185.0 kg of shellfish was caught out of the total catch of 1,293.2 kg, showing an 8.3% bycatch rate.

A Newly Recorded Sea Star, Genus Diplopteraster (Asteroidea: Velatida: Pterasteridae), from Korea Strait

  • Shin, Sook;Ubagan, Michael D.
    • Korean Journal of Environmental Biology
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    • v.35 no.2
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    • pp.101-104
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    • 2017
  • Asteroid specimens of the genus Diplopteraster were collected by trawling nets at a depth of 93 m on 05 November 2016 from the Korea Strait ($33^{\circ}41^{\prime}N$, $127^{\circ}26^{\prime}E$). The specimens were identified as Diplopteraster multipes(M. Sars, 1866), which belongs to the family Pterasteridae, order Velatida. This species is similar to other Diplopteraster species in its pentagonal stellate shape, but is distinguished by having each paxilla composed of a protruded spine, more than eight spiracles, and regularly reticulated muscular bands. It is not commonly found in shallow water. This is the first report of the genus Diplopteraster and D. multipes in Korea.

New Records of Two Phanerozonian Asteroids (Echinodermata, Stelleroidea) in Korea (한국산 현대목(극피동물문, 불가사리강)의 2미기록종)

  • Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.1
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    • pp.23-30
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    • 2000
  • Some asteroids were collected at a depth of 30 m in Chejudo Island. Of which two species were identified as Luidia maculata Muller et Troschel, 1842 and Linckia laevigata Linne, 1758. These species are turned out to be new to the Korean fauna and redescribed on the morphological characteristics with illustrations. Eighteen species of asteroids are reported to be distributed in the Chejudo Island of Korea.

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A Newly Recorded Sea Star of the Genus Marginaster (Asteroidea: Valvatida: Poraniidae) from the Korea Strait, Korea

  • Lee, Taekjun;Bae, Sungjun;Kim, Dae-Jin;Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • v.33 no.4
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    • pp.274-277
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    • 2017
  • A sea star was collected from the Korea Strait in the waters adjacent to eastern Jeju Island, Korea ($33^{\circ}39^{\prime}86^{{\prime}{\prime}}N$, $127^{\circ}33^{\prime}12^{{\prime}{\prime}}E$) at a depth of 92 m on November 5, 2016. This specimen was identified as Marginaster paucispinus Fisher, 1913, from the family Poraniidae of the order Valvatida, based on morphological characteristics. The genus Marginaster Perrier, 1881 and M. paucispinus, which were first reported in the South China Sea, are new to the Korean fauna. Partial sequences of mitochondrial COI and 16S ribosomal RNA of M. paucispinus were have been determined for the first time and were deposited in GenBank. They are the first molecular records for the genus Marginaster.

A new record of sea star genus Pteraster (Asteroidea: Velatida: Pterasteridae) from the East Sea, Korea

  • Shin, Sook;Kim, Donghwan
    • Journal of Species Research
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    • v.5 no.3
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    • pp.348-350
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    • 2016
  • An asteroid specimen was collected from Jumunjin, Gangwon-do in the East Sea, Korea at a depth of 50 m using fishing nets on 26 May 2013. It was identified as Pteraster militaris (O.F. $M{\ddot{u}ller$, 1776) belonging to the family Pterasteridae of the order Velatida based on morphological characteristics. This species is usually distributed in the cold boreal zone around northern Pacific and Atlantic, and is distinctly distinguished from P. tesselatus which was reported in Korean fauna: body form, length ratio of arm to disc and surface of dorsal membrane.

A new record of sea star genus Henricia (Asteroidea: Spinulosida: Echinasteridae) from Jeju Island, Korea

  • Ubagan, Michael D.;Shin, Sook
    • Journal of Species Research
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    • v.5 no.3
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    • pp.351-354
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    • 2016
  • Some asteroid specimens of genus Henricia were collected at a depth of 50-90 m near waters of Moseulpo, Jeju Island, Korea using fishing nets on September 2015. The specimens were identified as Henricia elachys Clark and Jewett, 2010 belonging to the family Echinasteridae of order Spinulosida. This small species can be distinguished from other Henricia species by short arms, moderately inflated arm base, and slightly broad disk. The morphological characteristics of this species were described with illustrations. Up to date, there are nine species of genus Henricia reported in Korean fauna.

New record of a sea star of genus Solaster (Asteroidea: Valvatida: Solasteridae) from the East Sea, Korea

  • Ubagan, Michael Dadole;Shin, Sook
    • Korean Journal of Environmental Biology
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    • v.37 no.4
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    • pp.503-507
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    • 2019
  • Asteroid specimens were collected using fishing nets from the East Sea, Korea. The specimens were identified as Solaster paxillatus Sladen, 1889, belonging to the family Solasteridae of the order Valvatida. This species can be distinguished from three other Korean Solaster species by having 10 arms; subambulacral spines comprising four or five near base of arm, six or seven in middle part, and five or six in distal part of arm; furrow spines comprising four or five near basal part and three or four in distal part of arm; and suboral spines comprising more than ten spinules. The morphological characteristics of this species were described with illustrations. Solaster paxillatus is first reported in marine fauna of Korea.